www.flunk.de

Issued by R3

About this certificate

This digital certificate with serial number 04:5f:bc:08:5f:4a:cf:86:16:85:7e:9b:7a:8a:3f:e4:70:8d was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.


We have idenified some issues with this certificate:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=www.flunk.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:5f:bc:08:5f:4a:cf:86:16:85:7e:9b:7a:8a:3f:e4:70:8d
Serial Number (int): 381025906918868594950654830339038462111885
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 65:e2:30:33:63:79:1a:6a:a9:26:03:c6:8a:55:43:07:b1:bf:34:21
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 00:cc:a0:5c:1a:93:ed:79:ce:00:2e:89:2c:b3:87:7d:00:4d:3f:82
Fingerprint (sha256): 43:d6:19:e8:56:3b:41:af:2c:4a:a5:c0:f1:c2:b0:63:98:67:cf:fc:ed:1c:89:67:3b:17:b8:ff:f0:02:6b:62

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate www.flunk.de

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.flunk.de

Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

flunk.de
www.flunk.de

Other certificates including the domain name flunk.de

(limited to 100 certificates)
grossehunderassen.de
flunk.de
spulen.t6a.de
www.flunk.de
kinderbibel.t6a.de
www.flunk.de
flunk.de
www.frucht-shakes.de
flunk.de
www.versicherungenkredite.de
www.flunk.de
www.flunk.de
geotextilvlies.de
www.flunk.de

Certificate

The complete raw certificate details for www.flunk.de in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIE7zCCA9egAwIBAgISBF+8CF9Kz4YWhX6beoo/5HCNMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yNDAzMDEwMDQ5MDdaFw0yNDA1MzAwMDQ5MDZaMBcxFTATBgNVBAMT
DHd3dy5mbHVuay5kZTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBANDV
a/AAOBHXCxzeomq6y+pRHrTryNWyRwzMmoMm71P1PHn5GhwD/2zV0rcRfx/YGD6H
lnvIBSPa6ZmKebMgvvnQadRKNKkwxvyopsn0I5kaKl/zZNOsteurCjE2xU4Payl8
qiU6Y/CvMP3sO6zdarmgALI9mlJoUjnxsl8eWA0l/eYYd1FoOyi1A9Pp8JQB3Jqh
7AIYb1P3tWyH1bp5tpIwTyy0FvwMdLVfxzhEbQlznE1Hp6nUH/HYucJOALoMJXvd
gSN9510BK7O49wxaXZpOmqi9Zsa2jwzl1S/3fNTUHf1MfgsdeSXO1SG2Q3Aca43T
ntEdoaj9HkQmQRN8Sg0CAwEAAaOCAhgwggIUMA4GA1UdDwEB/wQEAwIFoDAdBgNV
HSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4E
FgQUZeIwM2N5GmqpJgPGilVDB7G/NCEwHwYDVR0jBBgwFoAUFC6zF7dYVsuuUAlA
5h+vnYsUwsYwVQYIKwYBBQUHAQEESTBHMCEGCCsGAQUFBzABhhVodHRwOi8vcjMu
by5sZW5jci5vcmcwIgYIKwYBBQUHMAKGFmh0dHA6Ly9yMy5pLmxlbmNyLm9yZy8w
IQYDVR0RBBowGIIIZmx1bmsuZGWCDHd3dy5mbHVuay5kZTATBgNVHSAEDDAKMAgG
BmeBDAECATCCAQQGCisGAQQB1nkCBAIEgfUEgfIA8AB2ADtTd3U+LbmAToswWwb+
QDtn2E/D9Me9AA0tcm/h+tQXAAABjfezbN0AAAQDAEcwRQIhALYoj+3hHhV2LSH2
45XlOKJP2cuWWC6rMAOywksTn2eLAiAlupAjWvKpt0ouHRXyb7iL8ncIBsWX+YOx
nTbi1Eyy/gB2AKLiv9Ye3i8vB6DWTm03p9xlQ7DGtS6i2reK+Jpt9RfYAAABjfez
bOkAAAQDAEcwRQIhALwpkX9wpIkuEzWVOVyig+0153UmqX/xhLI9oC/vgtRiAiBh
PHFdvIv6zPiaARFSHLw3OMkxNI4UpQaL29CNyDZRRTANBgkqhkiG9w0BAQsFAAOC
AQEAQ/GftJlJpeVlCpO5OL7QnmBoFnMgAd72nrqJHS0t/os/huxlylaaGjGmirwH
aype+MiqeS1/id5k3s75bfzlT4cO9z8VllSHA3DpL6+uMW39xskNpiL7PkAbLfWe
/ErrS2qPNrBJQPeXRNoiFFi3ueVUopRfeQTzP6wlKJUyIxjNTwdWRYJA0AMQ2v8E
f0oBLvN78PalUThhItS7oKVgByiGC5Z4CmI13Xnfj0U+5jX5/inPoOvN3haL0rTh
JXR7d94XjknAvqbXLvYKo1keVzN6q14yaA+9MHQ27cNvxnLTgGwZZQJ2LSFpj4Jq
D3s/1YqjOI996QKsgXtMAtjVKA==
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0NVr8AA4EdcLHN6iarrL
6lEetOvI1bJHDMyagybvU/U8efkaHAP/bNXStxF/H9gYPoeWe8gFI9rpmYp5syC+
+dBp1Eo0qTDG/KimyfQjmRoqX/Nk06y166sKMTbFTg9rKXyqJTpj8K8w/ew7rN1q
uaAAsj2aUmhSOfGyXx5YDSX95hh3UWg7KLUD0+nwlAHcmqHsAhhvU/e1bIfVunm2
kjBPLLQW/Ax0tV/HOERtCXOcTUenqdQf8di5wk4Augwle92BI33nXQErs7j3DFpd
mk6aqL1mxraPDOXVL/d81NQd/Ux+Cx15Jc7VIbZDcBxrjdOe0R2hqP0eRCZBE3xK
DQIDAQAB
-----END PUBLIC KEY-----

ASN.1 decoded

 [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2
 . . . . . . . . [c:0|t:2|false] INTEGER 381025906918868594950654830339038462111885
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-01 00:49:07 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-30 00:49:06 +0000 UTC
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'www.flunk.de'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption)
 . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 26362809561551237875587560526401715871575648570196096971204672846328585711381177981122935692876318516601705360753551747933271676929225983729809459543317951517771005790385727101541877070176188887276541479815606455357697899939232206054416262149738066716968650454299960659433712626876678594947266789919750227576714378244847555991892343012793901708680754125845251290897884011297797992873593653781686231395064289483757642977108355736832854741443451568094536333204367867032281163635044093853750225001954959519473385276204662241238695221231445246875535105058184421268461658042452271633431764303637539681532519832755212405261
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537

 . . . . . . . . [c:2|t:3|true] ORAddress 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits)
							05a0
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							65e2303363791a6aa92603c68a554307b1bf3421
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (73 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.o.lencr.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (26 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'flunk.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.flunk.de'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (12 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018df7b36cdd0000040300473045022100b6288fede11e15762d21f6e395e538a24fd9cb96582eab3003b2c24b139f678b022025ba90235af2a9b74a2e1d15f26fb88bf2770806c597f983b19d36e2d44cb2fe007600a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018df7b36ce90000040300473045022100bc29917f70a4892e133595395ca283ed35e77526a97ff184b23da02fef82d4620220613c715dbc8bfaccf89a0111521cbc3738c931348e14a5068bdbd08dc8365145
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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